Make sure you confirm that the money has been charged through your PayPal account - if not, go back immediately to your order at Threezero and press the Pay Now button next to the order to complete payment.
If you have verified the money is out of your PayPal account and you have received a confirmation email from Threezero AND PayPal, don't worry about the "awaiting payment" message on your order status on the site - this will change to "processing" within a day or two.
Explanation of the above: The site may confirm your order within the browser but leave the funds in your PayPal account without completing the payment - at the end of the order period in a few weeks if the payment hasn't been completed (which you have to do manually as instructed above if there's an issue) they'll cancel the order. Don't get caught up in this snafu!